Combination lock



1/ 0 O 4 76 50 K 75 64 5/ J March 6, 1928. 1,661,680

D. ROBERTI COMBINATION LOCK Filed Apr-ii lg. 1927 2 Sheets-Sheet 1 a F; A

INVENTOR. I

5 M a- We A TTORNEY.

March 6, 1928. 1,661,680

D. ROBERT] COMBINJALTION LOCK File A l 12, 1927 2 Sheets-Sheet 2 1764 5/ 74 Z5 7 Z4 73 72 3 7 E II 26 3 I i 27 3/ /0 v Z 6930 I 6 5 5 O g 29 1' l 6 x a I 9 F/G/O 457299 a 65 INVENTOR.

A TTORNE Y.

l atented 5, 1928. entree s rarest orFic ant-s DARIO ROBERTI, 0F SPRINGFIELD, MASSACHUSETTS.

GOMBINATEGN LOCK.

Application filed April 12, 1927. Serial No. 183,066.

with thei uition swi tches oi" automobiles, and

I y c e attachable able from a all .lld provided at cover, said case containing co, main loch bolt, retracting l bolt, means to hold said bolt in retracted position, spring pressed, permutation lock-bars :[or said bolt, mechanism to impart a step-b p movement to said lockbars, including relea means therefor, an auxiliary, spring-presed lock bolt mounted on said plate in position to be engaged by said main bolt, and adapted when disengaged therefrom to assist the same in looking said case to said plate, a spring of peculiar construction adapted, when normally disposed, to prevent said loch-bars from sliding out oi? channels providedin said cover to receive them, when said cover is open to retain said releas moans normally in engagement with said loclnhars. and to throw open said cover when unlatched, together with such other parts and members as may be necessa' or nesirable in order torcnder the lock .plcte and serviceable in e\'*cry respect, hereinafter set forth. The lifters with push-pins, and certain others of the all their parts and members oi: this loch are new and apart from the combination or 00111- ious of which they constitute elements. is invention is in the nature of an in1- movement of the combination lock covered b: lietters atcnt of the United States, No. lfit'id.

novel hi? ct One object of my invention is to produce a combination lock adapted for use in connection with the ignition switch for the engine ct an automobile, whereby the movable incml'icrs of said switch are locked in out-or" contact position when the combination is disribu'ted, and permitted to be moved, when said comb nation is set, into position to close the circuit through the coil and the magneto, and capable of being moved to close the circuit through said coil and battery when the latter :torins a part of the ignition sysm of the machine. his locl: is adapted to have the combination set by imparting to one or more at the loclobars, through'the medium of puslrpins which correspond in number with said lock-bars, a predetermined muubei' or nnnn c of pulsations. When the ombination is set both bolts are released and can be withdrawn fromlocking position and hold out of such position. lhus'it is seen thatonly a person having the correct combination can unlock the ignition-switch to enable it be used to start the engine, or unlock the case from the plate, which plate is securely attached to the instrumentboard otthe automobile. it

another ob ect isto provide a combination locl: of this character that is adapted for use apart from ignition switches, and this without materially changing the construction of said lock. V a

A further object is to produce a combination lock which consists Off comparatively few parts and those parts comparatively simple in construction and operation, While at the same time the lock issafe, secure, easy to operate, and withal entirely practical and highly ellicient. I V Still another obj cct is to afford ready means for obtaining access to the interior of the case, for the purpose oitchanging the coml' ion ot the loclnwithout, by aliording such means, detracting from or decreasing the safety and security otsaid look. It is to this end that theprovisi-on is made for locking the case to and unlocking-it from the plate. I y I Other objects and advantages will appear in the course of the following description;

I attain the objects and secure the advan tages of my invention by the mechanism illustrated in the, accompanying drawings, in whicha t Figure 1 is a front elevation of a combination lock which embodies a practical form of my invention, the same including the ig-v nition-switch locking feature; Fig, 2, a left-hand side elevationof said lock, with aportion ot the fixed switch element in section; Fig.3, a rear elevation of the lock with portions broken away to disclose parts that otherwise would be hidden; F 4:, a rear elevation of the lock, withthe cover of the case open, and parts broken out and in section; Fig. 5, a vertical section through the lock, taken on lines 5-5, looking in the S-8 in Fig. 6 Fig. 9, a rear elevation of one of the litters and its push-pin; Fig. 10, a side elevation of said litter and push-pin; Fig. 11, a detail including a portion of the main bolt of the lock when adapted for a suit-case, and Fig. 12, :1 similar detail showing said bolt in unlocked position.

Similar reference characters designate similar parts throughout the several views.

Although I have illustrated this combination lock in connection with an ignition switch, and will so describe the same, it is to be understood, as hereinbetore intimated, that the lock is susceptible of a variety of different applications or uses, hence I do not desire or intend to restrict the same in these respects, except in so far as certain of the claims include the switch elements.

Preferably a plate, such as that represented at 1, or its equivalent, is provided as a part of this combination lock. The plate is, in practice, securely attached to the instrument-board of an automobile, it said lock is to be used in connection with the ignition switch of the machine, or to the front of a drawer or one side of a door, or to one side of a receptacle of the dress-suit case type. In the plate 1 is a rectangular opening 2 provided to receive a rectangular case 3. The case 3 has a flange around the front side to overlap the edges of the opening 52. Two screws 4. are employed to fasten the flange at the top and bottom of the case 3 to the plate 1, said screws being passed through said flange and tapped into said plate. Fastened to the back side of the plate 1, adjacent to one vertical edge of the opening 2, are two spring clips 6 having rearwardly extending lips provided with pins 7-4 that extend over said opening. Recesses, represented at T--i" in Fig. (3, are made in the side of the case 3 that is adj 'nt to the clips (5 to receive the pins 7. ne opening 2 is somewhat wider than the width of the case 3, and the clips (3 force said case against the opposite side of said opening and hold it there normally. There is sufficient clearance to enable the case to be inserted in and removed from the plate 1.

Secured to the back side of the plate 1, between the clips 6, is a keeper 9 in which is a horizontal sliding bolt 10 adapted at its inner end to enter an opening 11 in the adjacent side of the case 3. The bolt 10 is actuated toward the case 3 by means of a spring 12 whichis received in a longitudinal slot 13 in said bolt. between the inner end of said slot and a lip 1% extending forwardly into said slot from the outer end of the back side of the keeper 9. The bolt 10 at the outer end is provided with a lug 15 to limit the movement imparted to said bolt by the spring 12.

On the front side of the plate 1 is a rotary knob 10. and on the front side of the case 3 near the top thereof is a vertically-movable knob 17, below that a horizontally-movalile knob 18 and a plate 19 which covers a slot 20 in said front side of the case, below said last-named knob and plate are three push-pins 21, and below the center push-pin is a push-pin Secured to the back side ol the plate 1, on the side of the case 3 that is opposite to that where the keeper 9 is locatwl, is a plate 233 having in the outer portion thereof a slot 21 that is parallel with the longitudinal center of the plate 1. and an arcuate slot 25 into the inner or lower end of which said firstnamed slot opens. In the outer end ot the slot 22 t a rearwardly extending lug or stop 26. A slide 27 is located on the back side of the plate in, and held in msition against said plate, by a bracket 25 that is secured to the plate below said slide and extends forwardly and upwardly behind the same. The bottom. longitudinal edge of the slide :17 is supported on the bracket 28, and said slide at the inner end is pivotally con nected at 29 with an extension 30 from the outer end oi. a horizontal, main, lock bolt :31. .t the outer terminal the slide 21' projccts rearwardly and then outwardly to form a lip 32, and on the back side of said lip is secured a block 33 of insulating material. A. s n-ing 3t has one terminal secured to a screw 92 and a pin 93 set in the plate 23, and the other terminal ot said spring bears against the upper edge of the slide if? and normally retains said slide in horizontal position. Extending rcarwardly trom the upper edge of the lip 3:2 is a lug or stop :35 adapted to operate in the slots and 25. \Vhcn the stop is in the slot ill, said stop is in line with the stop 26, but inwardly disposed relative thereto. The spring 34. hearing against the slide 27 normally l'tillllllr the same with the stop 35 against that part of the plate 23 which forms the bottom edge of the slot Ql and the bottom end of the slot 25, which edg* and end are in the same lun'izontal plane. Secured to the back side of the insulating block 323 is a contact member 36 having rearwardly and irnmrdly extending arms with upper and lower, semispherical contact-points 37 and 38, respectively, at their ends.

The knob 1.6 is mounted on the forward end of a spindle 39, which spindle is journaled in the plates 1 and Q2 and has rigidly secured thereto behind said last-namcd plate an arm 40. The arm 40 has therein a longitudinal slot 4-1 to receive a pin 42 that extends forwardly from the lip 3:. adjacent to the outer edge thercot.

Mounted on and secured to the back side of the plate 1, by means of two upper. teetprovided legs 94, and a lower, twhproviiled leg 95, is a plate 4:3 of insulating m.-1b-rial--- see Figs. 2 and 3. The insulating plate lob ltd

of these binding-posts is set into a contact-' point let into the front or inner side of the insulating plate 43, one of said contact points being shown at 96 in Fig. 2. I The con tact-points (96) for the three binding-posts are in position to have engaged therewith and disengaged therefrom the contact-points 37 and 38, in the manner hereinafter described. he exposed ends of the bindingpost contact-points are concave orrecessed to receive the contact-points 37 and 38 and thereby insure good connections. The concave-convex formation oi the contact-points (3'?-38 and 96) also causes the connections to be maintained when the slit e 2? is moved out of its normal horizontal position, as presently explained. A wire a? extends from the binding-posts l t to the battery (not shown), a wire 48 extends from the bindingpost l5 to the coil {not shown), and a wire 49 extends from the binding post 46 to the magneto (not shown) In the event no magneto be present, the binding-post l6 and the wire- 49 are omitted.

When the slide 27 is in its retracted position, with the stop in the lower end of the slot 25, the contact-points 3'? and 38 are in engagement with the ends of the contactpoints of the binding-posts 45 and -l6, respectively, and the circuit is closed between the coil and the magneto, through the wires 48 and i9, and said bindingposts and contact-points. Upon turning the knob 16 in the direction to swing the slide 27 on the pivot 29 upwardly, through the medium of the arm and the pin 4-2, the stop 35 then traveling upwardly in the slot 25 to the upper end thereof, which end limits the movement Of the parts in this direction, the con tact-points 37 and 38 are moved into engagement with the contact-points oi the bindingposts 4A and respectively, and the circuit is closed between the coil and the battery.

The resiliency ofthe arms of the contact member 36 is sufiicient to produce the necessary frictional resistance between the con tact-points to retain them in engagement with each other against the force of the spring 34, until such time as the lrnob'lG is partially rotated in the opposite direction to swing the slide 27 downwardly again into the normal horizontal position. The return of the slide to the aforesaid position carries the contact-points 37 and 38 into engagement again with the contact-points of the binding-posts 45 and 46, respectively.

When the slide 27 is in advanced position, it is there held against upward movement by the stop 35 which is then in the slot 24;. The stop 26 prevents the slide 27 from being advanced, when thrown up in position spending side of the case to connect the battery with the coil, in the event the main bolt be released, and thus breaking the-contact. In that case the outer edge of thelip 32 immediately encounters the inner end or the stop 26 and the outward movement of the slide 2? is arrested, but said slide can nevertheless, be swung down by means of the knoblG when said slide immediately moves into its most advanced position. g v 1 A cover has the longitudinal edge thereof that is adjacent to the keeper" 9 hinged, by means of a rod 51, to the corre- The rod 51 passes through openingsin the top and bottom sides of the case 3, and through a sleeved part of the aforesaid longitudinal edge of the cover 50. Inthe edge portion of the cover 50, which is opposite to that wh re said cover is hinged to the case 3, is an opening 52, and thecase 3 is provided at 53 with aspring latch to enter said opening, when said cover is closed, and retain the same in closed position. Formed in the cover 50 are three verticalchannels list-shaped to receive and permitto slide therein a corresponding number of lock-bars 55. I

Each lock-bar 55 is T-shaped in cross section, provided on the front sidewith'a plurality of ratchet teeth 56, and has therein above said ratchet teeth a notch 5'7. The notches 57 in the lock-bars 5:" are disposed at diitercnt distances from the upper ends thereof, but said lock-bars themselves are all the same length. At the bottom of each lock-bar is a rearwardly extending lip 58, and there is a forwardlyextending lip 59 at the top of each channel 54:. A spring 60 is located in each channel 55 between the lips58 and 59 and behind thelock-bar therein. The springsGO, therefore, have a constant tendency to force the lock-bar's downwardly. The lock-bars 55 are prevented tromdropping out of: the bottoms of the channels 54, when the cover 50 is open, by a spring 61 that is coiled around the rod 51 just above the bottom side of the case 3, andlias a projection 62 that extends into saidcase. The lips 58 onthe lock-bars are a little above the bottom ends thereof, and the spring 61 is introduced behind said lockbars at points belowsaid lips. On the back side the cover 50 is provided, at the bottom and adjacent to the free longitudinaledge of said cover, with avertical, resilient finger 63 that has a pinG l. The linger 63is tastened at the upper terininalto the cover and extends downwardly a short distance below the bottom edge of said cover, and the pin or extends forwardly from said finger through an opening in the adjacent corner of the cover. The spring 61, when in supporting position relative to the lock-bars 55, is held in place from below by the'pin 64 which then engages the outer terminalporill) tion of said spring. When, it is desired to release the lockbars 55, as for the purpose of changing the combination, the linger 53 is forced rearwart'lly at the bottom to withdraw the pin (i l from beneath the spring (31, and said spring is moved out, of engagement with said lock-bars and swung out of the way to permit to be made whatever changes may he required. after which said spring is returned to place beneath the lock-bars and secured with said pin. The locltbars, when unconfined by the spring til, can he slipped out of the lower ends 01' the channels 5-1- and transposed or rtan'ranged. and then slipped back into said channel, or new lock-bars may be substituted for the old ones. hen the lock-bars are all supported on the spring til, the notches 57 are out of line with each other.

Extending transversely across inside and secured to the trout: o t' the case 3 a plate 65, and the main bolt 31 is slidingly ar ranged on the back side or said plate. ln

and opening through the inner end ol' the bolt 31 is a. longitudinal slot tit}, and extending through said slot to be tapped into the plate is a screw (37. There an openin es in the side ol the case 3 which is adjacent to the switch members, through which opening the outer-terminal portion at the bolt 31. extends. The bolt 3.1 is slidingly held in place against the plate as by the screw (3? and some portion of said bolt which is always in the opening 68.

The slot 20 not only extends through the front side of the case 3. but also through the plate o5. The knob and the plate it) are secured to a stud ($9. The stud (it) passes through the slot 20, and has its rear end secured to the bolt 31. It follows. therefore, that the bolt 31 can be moved longitudinal from outside ol the case 3 by means of the l-litul) to. Extending rearwardtv from the upper edge of the bolt All. within the case 3, a flange notched or cut away in three places, as re n'c-sented at '71, to provide recesses tor the loch-bars 5.3 when in operative position. A notch T2 provided in the up per part ot? the bolt bl to receive the lower end 01" a vertical latch T3, when said bolt is retracted and said notch locked below said latch. A stud it projects into the case 3 from the bent side thereof. and a s n-jug T5 arranged on said stud to bear on the inner end of the llange TO to force it: with the bolt; 31 outwardly. when said bolt is released to said soring. and yieldingly hold said bolt in such position. The flange 70 at the outer end and a shoulder on the bolt ill below respectively encounter the upper and lower edge portions of the slot 68 and limit the outward movement of the bolt.

The latch 73 is arranged to slide vertically in a pair of lugs 76 on the back side of the platetifif The linob 173's mounted on :1.

stud T? which extends through a vertical slot in the front oi the case 3, and through and beyond the latch 7:5. The .--lot Tti permits the stud i? to more up and down to the extent nece sary to position the latch "ill in and out ot loelt'ing eng; enient with the bolt below. It second spring i is attached to the stud i l; and arranged to bear on the top of the stud Ti, and thereby either to retain the bottom ol the on the i latch Til top of the bolt 31,01 to force said latch into the notch 73 when the same is located di rectly below the latch. When the bolt ill is retracted, against the re'--iliency ot' the sprin 75, said bolt is held in retracting position by the latch T3, but by raising said latch, against the resiliency of the spring 78, out, ot' engagement with said bolt. the latter is advanced by said first-tanned spring, until the flange TU encounters the side of the case in which is the slot; ('38.

Each of the three pttslnpins 2t is provided with a litter (5) for engagement with the teeth at; ol the adjacent hick-bar 5D. This litter consists of a piece or wire having its terminals r-Ltltltitl in the plate (35 and esftcnding below said plate as two parallel arms so, then being formed into a coil til at the bottom of said arms, and llnaliy being carried upwardly and reaiwvardly to lorm the direct lilting element which is in the rorm ot' a triangle having its has: uppermost, as best shown in Figs. t) and lo. The inner end ot' the push-pin 21 has cars which are extended inwardly to produce an eye for the coil 81, said cars being bent over into said coil alter it has been. lormcd. "he push-pins 21 are loosely arranged in openings in the front side of the ca e I), and are nori'nally held, by the arms 5U ot' the litters it) with which said push-pins are connected, in their advanced position, said litters then being out of contact with the lock-bar teeth 56. Upon l'orcing any push-pin 21 inwardly. against the resiliency ot the arms St) oi the connected lifter it). said arms are bent rearwardlv, and said litter is carried rearwardly and upwardly, with the result, that the lock-bar 5G behind is raised the distance of one tooth 56. Then, upon the release of the pnshpin. the spring arms 8t) cause the litter 73') to he moved lot-ward and the push-pin to be actuated into it outwiu-d position.

Each time any lorlt bar 5,5 is elevated. against the resiliency ot' its spring (it), by the associated litter 7!) said lock-bar must. be held against downward movement, and to this end it provide in the lower part oi the case and in Front of the three lock-bars a detent 82 which has side arms pivotally connected at S3S3 with opposite sides ol said case, and also has three lingers S t that at the top incline upwardly and rearwardly to engage the teeth 56 of said lock-bars. The cenwow tral portions of the fingers Stare cut out to accommodate the actuating parts or the litters 7 9. When the cover is closed, the

spring extension 62 bears against the bottom 56, so that any and all of thelock-bars which have been elevated are permitted to descend, under the influence of thejsprings 60, into their low position onthe spring 61. The 'detent 82thus serves the double purpose of holding any loclebar 55 against downward displacement each time it is stepped up by'the associatedlifter 79, and of releasing any or all ofthe lock-barsand permittingthem to descend intoinit-ial position.

The extension 62, of thespring 61, serves further as means for causing the cover 50 to fly open when released from the latch 53.

In the present example, the notches 57 in the outer lock-bars 55are in linewith each other" and in position to receive therein the bolt flange 0, but the notch 57 in the mid dlelock-bar 55 must beelevated from its low position in order to locate said last-named notch. n position to receive said flange.

' The cover 50ca'n be closedonly when ,the bolt 31 is in advanced position, since then all of the lock-bars 55 .canenter the recesses ,7 1 provided for them in saidfiange Ordinarily there will be more than three lockrbars 55, and a correspondingly greater number of recesses 71, lifters 7 9 and pushpins 21, .detent fingers 84, and other parts and members closely associated with those just mentioned. The greater (the number of lock-bars the morediifioult the combination, otcourse, and the less liability of an unauthorized person being able to work out the combination.

The main bolt 31 is in line with the bolt 10 and adapted when retracted to force said last-named bolt outwardly, against the resiliency of the spring 12, until it is'clear ofthe case .3.

That part of the bolt 31 from which the extension 30 projects ,may be thicker than the main portion ofsaid bolt and indieated by the numeral 85. o

then the parts and membersare disposed asillustrat'edin Figs. 1, 3, 5, andS, the bolts 31 and .10 areinlocking position, and the ase 3cannot be removed .fromthe plate 1, because of the engagement of said firstnamed bolt-.withsaid plate behind the same, and the engagementof said second-named bolt with said case, t and theimovable switch members are ,entirely out of contact with the fixed switchmembers, and lockedin such position, the final locking element or elements being one or more of the lock-bars 55 in one or more of the recesses 71inthe bolt flange 70, whereby said flange with its-bolt is prevented from being-actuated inwardly or retracting. Here only the middle lock-bar 55 is in locking engagement with the flange 70, being in the central recess 71. Starting with the parts and members disposed as and in the manner just explained, the complete separation of the lock is described'as follows:

To release the bolt 31 from the lock-bars with'the push pins 21. Inthe present example it is ,necessary only to impart one pulsation to the middle lock-bar 55, by means of the associated lifter 79 and the attached push pin 21. The middle push-pin is forced inwardly and carries with it rearwardly and upwardly the attached lifter 79, the arms 80"above the coil '81 of said litter being at this time sprung rearwardly away from the front of the case. The movement thus imparted to the ,middle lifter causes the same to engage the middle 1ock bar55 and raise it one tooth, the tooth 56 that is in engagement with the intermediate detent finger 84 passing Lupiwartlly irom said finger, and the latter taking position in supporting relation to the next tooth 56 below, so that, when the litter swings forwardly, upon'the release of its push-pin 21, out of'eng'agement with the lock-bar said lock-bar is prevented troindescending. This movement upward oft-he int rinediate look-barlocates the notch 57therein he same horizontal plane with the notches 57 in theother two lock-bars, and all of said notches are now in the same horizontal*planefwith'the bolt flange 70. The p ush-pins 21 are loosely arranged in lifters 7 9 to be etfectivelyoperated" thereby.

Obviously, the notch 57 might be solocated in the middle lock-bar 55 that two, three, or more pulsations would-have tobe imparted .to the associated puslrpin 21 in order to raise said'llock-bar farenough'to locate said notchin thesame horizontal plane with the bolt flange and the notch 57in eachlot theother lock-bars might be so located th rein as'to require that said last-named lock-bar be elevated,- by {imparting thereto one or more pulsations, betoreit would be located in unloeking or releasing position. Furthermore, it "should' be observedat this 'poihtthat; if either or the outer .push-pinsQl heoperated, the-lockbar "55 controlled thereby, "and with the notch 57 located therein as-here shown," is elevated, with the result that said notch "is raised above theplane of the bolt'fiange 70, a solid part of said lock bar' is positioned in the front of the case and thus enable the u a I. I 55, 1t.1s necessary to set the combination all) the adjacent recess T1, and the bolt St is thereby held against inward movement. Due to the fact that one or more of the lock-bars may have been so disposed relative to the hinge it) as to prevent the bolt 31 from being retracted a tter the combinatitm has been worked, it; is generally necessary, before proceeding to work the combination, to force the push-pin Q2 inwardly and so rock the bottom part of the detent ($2 in the same direction. on the pivots 8 and against the resiliency of the spring extension (32, thus withdrawing the fingersv from engagement with the teeth 56 on all of the lock-ha and enabling the s n-inns (30 to actuate downwardly said hick-bars or any of them'which may be in el( ated position.

llavin; worked and set the combinatimi, the operator moves the knob (59 to the left. and therel actuatcs the bolt 31 inwardly until the latch T3 moves into engagement therewith. In moving inwardly the bolt 31 forces the bolt 10 out oi engagement with the case 3. and draws inwardly the slide 27 until the contact-points 37 and 38 are in engagement with the contact-points 96 of the binding-posts -l5'and 4K6, respectively. The stop is now located in the bottom of the slot When the slide 2? is in this posi tion it can be swung upwardly on its pivot 99, by means of the knob 10, into the position illustrated in Fig. 6, to engage the contact-points 3? and 38 with the contact-points 96 of the binding-posts l4 and respectively.

lVhile the parts and members are disposed in the manner last explained. but with the slide 27 down in its horizontal position. the case 3 can he removed from the plate 1, after taking out: the screws 4, simply by forcing the side oi said case with which the clips (3 are in contact out. of the opening 2. and then taking the case bodily from the plate. The clips 6 yield sulliciently at this time to enable the case to be withdrawn from engagement with the pins 7, and the pivot 28, being" attachcd to the extension 30, is tilted and lifted out of engagement; with the slide :27, the. opening in said slide for said pin being sutiiciently large for the purpose.

\Vhile the case 3 is out of the plate 1 said care can be opened by forcing the exposed end of the latch 53 outwardly to release the cover 50 to the spring extension 62. Access is thus had to the interior of the case, and to the lock-bars 55, and the latter, after releasing them from the spring, (31 can be rcarranged or exchanged for others. After changing the combination and replacing the spring; (31 in supporting position beneath the lock-bars 55, the cover 50 is closed, against the resiliency of the spring extension 62 engaged by the latch 53. and the case 3 is inserted again in the opening 2, the

side of said clue from which the extension 30 projects being introduced lirst, and then the opposite side being forced inwardly until the pins 7 again engage the recessed parts T of the contiguous side of the case, the pivot pin 29 meanwhile bcine caused to rcassume its engagement with the slide 27. lfpon the removal ot the l'2l.-(.. 33 from the plate 1. the spring 12 actnates the bolt l l inwardly until the 111; 15 contacts with the keeper 9. and the inner end ol said bolt extends over the opening 2, but up n the insertion of the case 3 in the opening 2 the are encounters said inner end and l Ult't. said bolt out 01'' the way. although the bolt finally enters the slot 1] in said case.

To lock the parts. the latch 72) is raised. by means of the knob 77. to withdraw the lowcr end of said latch from the recess Til in the bolt 31. when said bolt is shot by its spring T5. In moving outwardly, the bolt 31 carries the coi'it:1ct-points 37 and 215; beyond the contact-points 96 ot' the bindingpo-ts it and i and thus breaks the circuit through the switch see more especially Figs. 3 and at. In the event the bolt 3 be released while. the slide 27 is in the position shown in Fig. (i, the outer edge of the lip 32 encounters the stop it; and holds the parts until said slide is actuated downward ly by means of the knob 1b as far as permitted by the stop 35. As soon as the stop 35 in line with the slot l-l, the spring 7.3 forces the bolt 31 outwardly and with it the slide 27. Upon the advance of the bolt; 251 the bolt 10 under the influence ol' the spring 12 moves into locking engagement: with the case ll. Finally the push-pin should be actuated to bring about the relelne ol' the intermediate lock-bar 5.3 from the intermediate. engagin detent linger H11, and thus permit said lock-bar to descend and locate a solid part of the same in the intermediate recess Tl in the flange Ttl, thereby locking the bolt ll against inward movement. llutil and unless the detent 82 be operated by the lHh-ll-Illll 22. after the bolt ll has been released by the latch Til. said bolt can be ret'l'tlttttl at any time by means ot the knob 18 and reengaged by said latch.

Although it is ne -es1-::1i' to advance the bolt ll in order to enable the cover btl to be clo ed. said bolt must be. retracted belowthe case in inserted in the plate 1.

It, the lock is to b applied to drawe doors, and the like. the extension fit) is omitted from the outer end ol the bolt hen the. lock is to be applied to dress-suit cases and the like, I provide the bolt at the outer terminal with a tmnhler 97 which is pivotally connected at 98 with said bolt, and has a. lock-hook 89 and a linger W). In this example the thick. outcr-end portion of the bolt 31 recessed to receive the tumbler 8?, and said tumbler is so pivotally conll l nested therewith that either the lock-hook 87 or the finger 90 may project beyond one longitudinal edge of said portion.

As will be seen iromFigs. 11 and 12, when the bolt is advanced the tumbler 87 is carried outwardly, through the slot 68 in the adjacent side of the caseE-B, into and through a slot 91 in a lock-plate or keeper 86,- and, as said tumbler passes through said slots, the finger 9O encounters the sideoi the case belowthe slot 68 and causes the tumbler to make a partial revolution on the pivot v88 until, by the time said-bolt has reached the end of its travel, the lock-hook 89 is moved into engagement with said keeper at apoint inside of said slot therein. The part of the case 3 below the slot 68 and the part of the keeperSGbelow the slot 91 are now in the notchor indentation between thcloclchooli 89 and the linger 90, so that any force appliedto separate said case and keeper, acting through said lock-hook, causes said finger to bear against the case and thus prevent such separation to take place see Fig. 11. Upon the retraction of the bolt 31, the lookhook slides over the bottom edge of the slot 91, causes the tumbler 87 partially to rotate, and finally slides over the bottom edge of the slot 68 into the position shown in Fig. 12, said finger then meeting with no obstruction and moving into a downward position.

More or less change may be made in the shape, size, constriiction, and arrangement of some or all of the parts of this combi nation lock, in addition to the changes hereinbei ore specifically pointed out, without departing from the spirit of my invention or exceeding the scope of what is claimed.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a combination look, a plate having an opening therein, a case receivable in said opening, and yielding means normally to retain said case in place therein.

2. In a combination look, a plate having an opening therein, and provided with spring clips adjacent to one edge of said opening, and a case receivable in said opening and adapted when therein to be engaged by said clips.

3. In a combination lock, a case, a channeled cover for said case, spring-pressed loclrbars in the channels in said cover, and releasable means to prevent said loclobars from escaping from said channels.

a. In a combination look, a case, a chan neled cover for said case, spring-pressed loclcbars in the channels in said cover, and a spring adapted to be located in position to prevent said lock-bars from escaping from said channels, said spring being releasable from such position.

5. In a combination look, a case, a channeled cover for said case, said cover being provided with alatch, spring-pressed lockbars in the channels in said cover,- and a pivotally mounted member adapt/edto be located inpositionto prevent said lock-bars from escaping from said channels, and when in such position to be engaged by said latch. 6. In a combination lock, a case provided with a latch, a channeled cover hinged to said case, spring-pressed lock-bars in the channels in said cover, a spring pivotally connected with said case, adapted to beilocated in position to prevent said lock-bars from escaping from said channels, and having an extension which bears against said case and is adaptedto open said cover .when the same is released from said latch.

'7. In a combinationloclr, a case, a lockbar detent pivotally mounted on said case, a channeled cover for said case, spring pressed lock-bars in the channels in said cover, and a spring pivotally connected with said case and adaptedto be locatedm pos1- tion to prevent said lock-bars from escaping from said channels, and having an extension bearing on said detent normally to retain the same in engagement with said lock-bars.

8. In a combination look, a case provided with a latch, a channeled cover hinged to said case, spring-pressed lock-bars in the channels in said cover, a detent for said lock-bars, said detent being pivotally mounted in said case, and a spring pivotally connected with said case, adapted to be located in position to prevent said lock-bars from escaping from said channels, and having an extension adapted normally to retain said detent in engagement with said lock-bars, and to open said cover when released from said latch. i f

9. In a combination lock, a case,a cover for said case having channels therein and provided with lips, lock-bars provided with lips, said lock-bars being in said channels,

' and springs in said channels between said cover lips and said lock-bar lips.

10. The combination, in a lock of the class described, with a case, a cover for said case, serrated lock-bars slidingly arranged in said cover, and a detent in said case for said lockbars, of push-pins inthe front of said case, and resilient lifters for said look bars, said lifters being aflixed to said case, and opera tively connected with said push-pins.

- 11. The combination, in a lock of the class described, with a case, a cover for said case, and serrated lock-bars slidingly arranged in said cover, of lifters for said lock-bars, each of said lifters comprising a spring having its ends secured to said case, extended in the form of approximately parallel arms from the points of attachment, and then coiled and looped to form a part to engage one of said lock-bars, a push-pin slidingly arranged in the front of said case, and haviii ing an eye with which said coil is in engagement, and a detent for said lock-bars.

12. The combination, in a lock of the class described, with a case, a cover for said ease, and serrated lock-bars slidingly arranged on said cover, of means in said case to impart a step-by-step movement to said lock-bars, a spring-pressed detent pivotally mounted in said ease and having fingers to engage said lock-bars, and a push-pin slidingly arranged in the front of said ease, and attached to said detent, whereby the latter actuated to disengage said fingers from said lock-bars.

13. The combination, in a lock of the class described, with a plate having an opening therein. and a spring-pressed bolt mounted on said plate adjacent to said opening and adapted when released to its spring to engage said case, of a case receivable in said opening, a main bolt siidingly arranged in said case, and adapted when in advanced position to engage the inside of said plate, said first-named bolt being in the path of said main bolt when the latter is retracted, permutation means to lock said main bolt in advanced position, and exterior means to retract said main bolt when released by said permutation means.

let. In a combination lock a loch-bar having therein a notch, and provided with teeth to be engaged by a detent and a litter.

15. In a combination lock. a lock-bar having therein a notch, and provided with teeth to be engaged b a detent: and a lifter and with a spririg-supporting lip.

16. In a combination lock. a lock-bar having therein a notch, cut away at the bottom to receive a su 'iporting member. and provided with teeth to be engaged by a detent 31nd a lifter, and with a spring-supporting DARIO ROBERTI. 

